The addition of Cao to waste in ration 1:1 in relation to dry matter caused from one side partly sterilization of waste but from other big losses of nitrogen (about 50%) what decreased fertilizing value of waste and availibility of phosphor7us and heavy metals.Mixing of waste with others organic materials (sawdust pine barn, drops litter, beds after mushroom production) and vermicomposing of mixture allow on the production of very valuenable organo-mineral fertilizer and wormth biomass.